External risk intelligence

Windows Kernel Privilege Escalation Vulnerability

CVE advisoryKnown Exploit

CVE-2025-62215

A race condition in the Windows Kernel allows a local attacker to elevate privileges. This impacts organizations by potentially allowing unauthorized access and control over affected Windows systems, posing a business risk.

1Halo Surface Signal

Microsoft Windows 10 1809

before 10.0.17763.8027before 10.0.19044.6575before 10.0.19045.6575before 10.0.22631.6199before 10.0.26100.7092before 10.0.26200.7092before 10.0.20348.4346before 10.0.25398.1965

External exposure likelihood

Halo Surface Signal score for CVE-2025-62215

The vulnerability is a race condition within the Windows Kernel that requires local access to the system. It is not reachable over a network, making public internet exposure impossible by design.

Horizon Alert

Summary of the vulnerability and why it matters

A race condition in the Windows Kernel allows an attacker to elevate privileges on a local system. This occurs due to improper synchronization when shared resources are accessed concurrently. Exploiting this flaw can lead to unauthorized access and control over affected systems.

  • Vulnerable: Windows Kernel
  • Weakness: Improper synchronization during concurrent access
  • Impact: Privilege escalation and system compromise

Attack Path

How an attacker could exploit the issue

A race condition in the Windows Kernel can allow an attacker with local access and reduced privileges to elevate their control. This occurs when multiple processes attempt to access a shared resource without proper synchronization. The successful exploitation of this vulnerability can grant an attacker elevated privileges on the affected system.

  • Local access required for exposure.
  • Attacker triggers race condition.
  • Unauthorized privilege escalation results.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an attacker with local access and some technical skill to gain elevated privileges on a Windows system. Exploitation involves a race condition within the operating system's kernel, requiring specific timing to succeed. Successful exploitation could lead to an attacker taking full control of the affected system, posing a significant risk to data and operations. Given its inclusion on a known exploited vulnerabilities list, organizations should treat this with urgency.

  • Low to medium attacker skill level.
  • Requires local access to the system.
  • High business risk and urgency.

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

A race condition vulnerability in the Windows Kernel allows a local attacker with reduced privileges to elevate their access. This could enable an attacker to gain administrative control over the affected system. Organizations should prioritize identifying and addressing systems impacted by this vulnerability to mitigate potential business risks.

  • Identify affected Windows assets.
  • Reduce exposure or isolate risk.
  • Apply vendor fixes and validate.
  • Monitor for related issues.

Frequently asked questions

What is the Windows Kernel and what is it used for?

The Windows Kernel is the core component of the Windows operating system, responsible for managing the system's resources. It handles fundamental tasks such as process management, memory management, and device driver interactions, forming the foundation upon which all other applications and system services run.

What type of weakness is CVE-2025-62215 and what does it mean?

CVE-2025-62215 is a race condition vulnerability, identified by CWE-362. This means the flaw arises from improper synchronization when multiple processes try to access a shared resource simultaneously, leading to unpredictable outcomes and potential security breaches like privilege escalation.

What conditions are needed for an attacker to exploit this CVE?

An attacker must have local access to the affected Windows system and possess a low-level privilege to exploit this vulnerability. It is not triggered by actions that do not involve this specific concurrent access to shared resources within the kernel.

Who should be concerned about CVE-2025-62215?

Organizations running the affected Windows versions should be concerned. Since this vulnerability requires local access and is not reachable over the internet, its primary risk is to internal systems.

What is the first step to address this vulnerability?

The first practical step is to identify all Windows assets that may be running the affected versions. Following this, organizations should reduce exposure or isolate any identified risky systems and plan to apply vendor-provided fixes.

References